Another of these factors is infertility. Generally, female gorillas mature at 10â12 years of age (or earlier at 7â8 years) and their male counterparts mature more slowly, rarely strong and dominant enough to reproduce before 15â20 years of age.
A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
Sciatica Overview: 1  Sciatica and sciatic pain is a symptom rather than a diagnosis. It may occur when nerve root(s) at the lumbar spine are compressed or damaged causing pain, burning, weakness, numbness or tingling in the low back or legs. 2  Many people with sciatica are able to resume their normal activities after treatment.